Measuring might feel like math in the classroom, but at the Tellus Science Museum, it looks a lot more like playtime.

On July 14th, 1868, 151 years ago today, Alvin Fellows, of New Haven, Connecticut, patented his "new and useful improvement in spring measuring tapes." Though not the first, Fellows' design is widely ...

You've no doubt encountered a number of measuring tools in your lifetime. Common tools used for measuring range from the familiar 12-inch wooden ruler that we used in grade school to precision ...

If you know your U.S. history, there have been several attempts to adopt the metric system, all to no avail. It's the universal standard for most of the world and way more intuitive, yet the chances ...

You already know that the highlighted numbers (16, 32, 48…) are for laying out studs, joists or rafters every 16 in. But what’s the deal with those little diamonds or triangles? They’re ‘truss marks’ ...